How do I manipulate curves of animated textures?? (not showing in graph editor)
Think I figured the issue out.
Normally if I select an object, it's animated properties show up in the animation editors (graph/dope/timeline)... but it seems that to access animated attributes of an object's shader nodetree, both the object AND it's animated shader node has to be selected.

I selected the object in a 3d viewport, and also clicked on the animated shader node in the shader editor.... and the animated channels where available for editing in the graph/dope sheet/timline.